Nezve Cellulose
Cellulose ipolysaccharide yakakura inoumbwa neglucose. Inowanikwa muhuwandu hwakawanda mumiti yakasvibira uye zvipenyu zvemugungwa. Ndiyo polymer yechisikigo yakapararira zvakanyanya uye yakakura kupfuura dzimwe dzose. Ine hutano hwakanaka, inogona kudzokororwa uye inogona kuora uye inogona kuora nezvimwe zvakanakira. Kuburikidza ne photosynthesis, zvirimwa zvinogona kugadzira mazana emamiriyoni ematani e cellulose gore rega rega.
Matarisiro Ekushandisa Cellulose
Cellulose yechinyakare yakaganhurira kushandiswa kwayo zvakanyanya nekuda kwehunhu hwayo hwepanyama uye hwemakemikari, nepo cellulose yezvinhu zvepolymer zvechisikigo zvine hunhu hwakasiyana hwekushanda mushure mekugadzirisa nekugadzirisa, izvo zvinogona kusangana nezvinodiwa zvakasiyana zvemaindasitiri akasiyana. Kushandiswa kwezvishandiso zvecellulose kwave mafambiro echisikigo ekuvandudza uye nzvimbo dzinonyanya kutsvagisa dzezvinhu zvepolymer.
Zvinobva mu cellulose zvinogadzirwa ne esterification kana etherification ye hydroxyl groups mu cellulose polymers ne chemical reagents. Zvichienderana nehunhu hwe reaction products, cellulose derivatives zvinogona kukamurwa muzvikamu zvitatu: cellulose ethers, cellulose esters, uye cellulose ether esters.
1. Cellulose ether
Cellulose ether izwi rekuti "cellulose derivatives" inoumbwa ne "reaction" ye "alkali cellulose" uye "etherifying agent" pasi pemamwe mamiriro ezvinhu. Cellulose ether rudzi rwe "cellulose derivative" ine mhando dzakasiyana-siyana, minda yakawanda inoshandiswa, huwandu hwakawanda hwekugadzira uye kukosha kwakanyanya kwekutsvaga. Kushandiswa kwayo kunosanganisira minda yakawanda yakaita seindasitiri, kurima, indasitiri yemakemikari yezuva nezuva, kuchengetedzwa kwezvakatipoteredza, ndege nekudzivirira nyika.
Ma ether e cellulose anoshandiswa mukutengeserana ndeaya: methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, cyanoethyl cellulose, hydroxypropyl cellulose uye hydroxypropyl methylcellulose Cellulose nezvimwewo.
2. Cellulose ester
Cellulose esters inoshandiswa zvakanyanya mukudzivirira nyika, indasitiri yemakemikari, biology, mushonga, kuvaka uye kunyange mundege.
Ma ester e cellulose anoshandiswa mukutengeserana ndeaya: cellulose nitrate, cellulose acetate, cellulose acetate butyrate uye cellulose xanthate.
3. Cellulose ether ester
Maester e-cellulose ether zvinhu zvakasanganiswa zvinogadzirwa ne ester-ether.
Munda wekushandisa:
1. Munda wemishonga
Cellulose ether uye ester derivatives zvinoshandiswa zvakanyanya mukurapa pakukora, kusimbisa, kuburitsa kwenguva refu, kuburitsa kwakadzorwa, kugadzira firimu nezvimwe zvinangwa.
2. Munda wekufukidza
Maester eCellulose anoita basa rakakosha mukushandiswa kwekuputira.Maester eCellulosezvinoshandiswa muzvibatiso, maresini akagadziriswa kana zvinhu zvakagadzirwa nefirimu kuti zvipe machira ane hunhu hwakanaka kwazvo.
3. Munda wetekinoroji yeMembrane
Cellulose nezvinhu zvinobva kune imwe mhando zvine zvakanakira zvekubuda kukuru, kushanda kwakasimba, uye kudzokororwa. Kuburikidza nekuzvisanganisa kwe layer-by-layer, phase inversion method, electrospinning technology nedzimwe nzira, zvinhu zve membrane zvine performance yakanaka yekuparadzanisa zvinogona kugadzirwa. Mumunda we membrane technology zvinoshandiswa zvakanyanya.
4. Chikamu chekuvaka
Cellulose ethers dzine simba guru regel rinodzoreka pakupisa uye nekudaro dzinobatsira sezvinhu zvinowedzerwa muzvinhu zvekuvaka, zvakaita sezvinowedzera zvema tile zvakagadzirwa nesimende.
5. Ndege, mota itsva dzemagetsi uye zvishandiso zvemagetsi zvemhando yepamusoro
Zvinhu zvemagetsi zvinoshanda zvichibva pa cellulose zvinogona kushandiswa mundege, mota itsva dzemagetsi uye zvishandiso zvemagetsi zvepamusoro.
Nguva yekutumira: Kubvumbi-25-2024